move dumb loop to regex replace

Signed-off-by: GitHub <[email protected]>

backend/src/utils.ts

@@ -625,7 +625,6 @@ const plainLinkRegex = /((?!https?:\/\/)\S)+\.\S+/; // anything.anything, withou
 // Both of the above, with precedence on the first one
 const urlRegex = new RegExp(`(${realLinkRegex.source}|${plainLinkRegex.source})`, "g");
 const protocolRegex = /^[a-z]+:\/\//;
-const hostnameTldRegex = /^[a-z]$/;
 
 interface MatchedURL extends URL {
  input: string;
@@ -651,10 +650,7 @@ export function getUrlsInString(str: string, onlyUnique = false): MatchedURL[] {
  let hostname = matchUrl.hostname.toLowerCase();
 
  if (hostname.length > 3) {
- while (!hostnameTldRegex.test(hostname.at(-1)!)) {
- if (!hostname.length) break;
- hostname = hostname.slice(0, -1);
- }
+ hostname = hostname.replace(/[^a-z]+$/, "");
  }
 
  const hostnameParts = hostname.split(".");